Mec260
Homework #1
1
．
In SI units, the universal gravitational constant
11
6.67
10
G
−
=
×
Nm
2
/kg
2
. Determine the value of G in U.S. Customary base units.
2
．
In the equation
2
1
2
T
I
ω
=
the term
I
is in kgm
2
and
w
is in s
1
.
(a)
What are the SI units of
T
?
(b)
If the value of T is 100 when
I
is in kgm
2
and
w
is in s
1
, what is the
value of
T
when it is expressed in terms of U.S. Customary base units?
3
．
The “crawler” developed to transport the
Saturn V
launch vehicle
from the vehicle assembly building to launch pad is the largest land
vehicle ever built, weighing
6
4.9
10
lb
×
at sea level.
(a) What is its mass in slugs?
(b) What is its mass in kilograms?
(c) A typical car has a mass of about 1000 kg. How many such cars does
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 Fall '08
 C.Trujilliano
 Statics, Mass, Kilogram, sea level, U.S. Customary base, Customary base units, 1.62m

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